<?php
/* Коды для замены букв */
'а' => '1',
'б' => '2',
'в' => '3',
'г' => '4',
'д' => '5',
'е' => '6',
'ё' => '7',
'ж' => '8',
'з' => '9',
'и' => '0',
'й' => '#',
'к' => 'q',
'л' => 'a',
'м' => 'z',
'н' => 'w',
'о' => 's',
'п' => 'x',
'р' => 'e',
'с' => 'd',
'т' => 'c',
'у' => 'r',
'ф' => 'f',
'х' => 'v',
'ц' => 't',
'ч' => 'g',
'ш' => 'b',
'ъ' => 'y',
'ы' => 'h',
'ь' => 'o',
'э' => 'k',
'ю' => 'l',
'я' => 'm',
);
$text = 'нас предали. явка провалена.';
$cipher = strtr($text, $code);
echo "Оригинал: {$text}\nШифровка: {$cipher}\nРасшифровка: {$decipher}\n";
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